Do you know about the iTHEMS Event Calendar?
If you've been getting a lot of seminar invitations in the mail and don't know what to do with them,
please take a look at the iTHEMS Event Calendar.
Just add it to your Google Calendar and new seminars will be added automatically.

Adding to your Google Calendar is very easy.
Just click on the "+Google Calendar" button at the bottom right of the calendar.
Don't miss a seminar you want to attend! Check it out! Yeah!

Astronomers are now in a better position to interpret observations of supernova remnants thanks to computer simulations of these cataclysmic events by RIKEN astrophysicists.

April is the season when we have new faces.
Yesterday, 10 people have joined us.
Welcome to iTHEMS and let's have fun in science together!

On March 25th, José Gutiérrez from Chiba University gave a talk at iTHEMS Biology Seminar about the evolution and diversification of cycads ("sotetsu" in Japanese) in Mexico. He explained how the different species and populations of cycads are distributed in different areas of Mexico, and showed how this can be explained by changes in the climate and the adaptation of each species to the different environment. He then discussed some general ideas of how speciation and diversification can occur. It was probably the first time for many iTHEMS members to hear about research in Ecology, and I think many of us learned something new. We were also able to have a nice and fruitful discussion after the talk.

Reported by Jeffrey Fawcett

In iTHEMS biology seminar on April 1st, Yuji Hirono (Assistant Professor, Asia Pacific Center for Theoretical Physics, POSTECH, Korea) gave us a talk on chemical reaction networks. Hirono-san has been recently working on chemical reaction networks with Miyazaki-san, Hidaka-san, and me. In the seminar, he talked about a new method of studying chemical reaction networks from network topology. He first explained graph theoretical aspects of chemical reaction systems, and then explained how these tools can be used to characterize reaction systems. Then, he explained a method of simplifying/deforming chemical reaction systems without affecting steady-state properties. I am grateful to Hirono-san because I could improve my understanding of reaction systems through collaboration with him. Also, Hirono-san and I have been friends since we were undergraduates, and I am happy to work together. Thank you very much, Hirono-san!

Reported by Takashi Okada

Sorry for not being updated since February due to a system error.

Title: Impacts of new small-scale N-body simulations on dark matter annihilations constrained from cosmological 21cm line observations
Author: Nagisa Hiroshima, Kazunori Kohri, Toyokazu Sekiguchi, Ryuichi Takahashi
arXiv: http://arxiv.org/abs/2103.14810v1

Title: Quantifying the relative contribution of free virus and cell-to-cell transmission routes to the propagation of hepatitis C virus infections in vitro using an agent-based model
Author: Kenneth Blahut, Christian Quirouette, Jordan J. Feld, Shingo Iwami, Catherine A. A. Beauchemin
arXiv: http://arxiv.org/abs/2102.05531v1

Title: Arithmetic and geometric deformations of $F$-pure and $F$-regular singularities
Author: Kenta Sato, Shunsuke Takagi
arXiv: http://arxiv.org/abs/2103.03721v2

Title: Codimension 2 transfer of higher index invariants
Author: Yosuke Kubota
arXiv: http://arxiv.org/abs/2103.04741v1

Title: Dynamic sampling bias and overdispersion induced by skewed offspring distributions
Author: Takashi Okada, Oskar Hallatschek
arXiv: http://arxiv.org/abs/2103.05852v2

Title: Dual Labor Market and the "Phillips Curve Puzzle"
Author: Hideaki Aoyama, Corrado Di Guilmi, Yoshi Fujiwara, Hiroshi Yoshikawa
arXiv: http://arxiv.org/abs/2103.06482v1

Title: Dirac Fermion Cloning, Moiré Flat Bands and Magic Lattice Constants in Epitaxial Monolayer Graphene
Author: Qiangsheng Lu, Ching-Kai Chiu, Congcong Le, Jacob Cook, Xiaoqian Zhang, Xiaoqing He, Mohammad Zarenia, Mitchel Vaninger, Paul F. Miceli, Chang Liu, Tai-Chang Chiang, Giovanni Vignale, Guang Bian
arXiv: http://arxiv.org/abs/2103.10401v1

Title: Functional-renormalization-group approach to classical liquids with short-range repulsion: a scheme without repulsive reference system
Author: Takeru Yokota, Jun Haruyama, Osamu Sugino
arXiv: http://arxiv.org/abs/2103.11375v1

Title: The bulk-dislocation correspondence for weak topological insulators on screw-dislocated lattices
Author: Yosuke Kubota
arXiv: http://arxiv.org/abs/2103.13277v1

Title: Structural reduction of chemical reaction networks based on topology
Author: Yuji Hirono, Takashi Okada, Hiroyasu Miyazaki, Yoshimasa Hidaka
arXiv: http://arxiv.org/abs/2102.07687v1

Title: Optical Spin Transport in Ultracold Quantum Gases
Author: Yuta Sekino, Hiroyuki Tajima, Shun Uchino
arXiv: http://arxiv.org/abs/2103.02418v2

Title: Improving Schrödinger Equation Implementations with Gray Code for Adiabatic Quantum Computers
Author: Chia Cheng Chang, Kenneth S. McElvain, Ermal Rrapaj, Yantao Wu
arXiv: http://arxiv.org/abs/2103.08056v1

Title: Diagnosis of information scrambling from Hamiltonian evolution under decoherence
Author: Tomoya Hayata, Yoshimasa Hidaka, Yuta Kikuchi
arXiv: http://arxiv.org/abs/2103.05179v1

Title: Nuclear energy density functionals from empirical ground-state densities
Author: Giacomo Accorto, Tomoya Naito, Haozhao Liang, Tamara Niksic, Dario Vretenar
arXiv: http://arxiv.org/abs/2103.10096v1